<template>
  <div class="login_container">
    <div class="login_box">
      <!-- 头像区域 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>

      <!-- 登录表单区域 -->
      <el-form
        class="login_form"
        :rules="loginFormRules"
        :model="loginForm"
        ref="loginFormRef"
      >
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input
            prefix-icon="iconfont icon-user"
            v-model="loginForm.username"
          ></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-3702mima"
            v-model="loginForm.password"
            type="password"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="primary" @click="$router.push('/register')"
            >注册</el-button
          >
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      //这是登陆表单的数据绑定对象
      loginForm: {
        username: "",
        password: "",
      },
      //这是表单的验证规则对象
      loginFormRules: {
        username: [
          { required: true, message: "请输入登录名称", trigger: "blur" },
          {
            min: 2,
            max: 10,
            message: "长度在 2 到 10 个字符",
            trigger: "blur",
          },
        ],
        password: [
          { required: true, message: "请输入登录密码", trigger: "blur" },
          {
            min: 6,
            max: 10,
            message: "长度在 6 到 10 个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  methods: {
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields();
    },
    // login(){
    //   this.$refs.loginFormRef.validate(async(valid)=>{
    //     //如果表单填写校验失败就退出
    //     if(!valid) return;

    //     const formData = new FormData();
    //     formData.append("username", this.loginForm.username);
    //     formData.append("password", this.loginForm.password);

    //     //解构赋值请求的返回值
    //     const {data:res}=await this.$http.post('login',formData)

    //     if(res===0) return this.$message.error('登陆失败')
    //     alert(`用户id为${res}`)
    //     this.$message.success('登录成功')
    //     //把user的id存到本地
    //     window.sessionStorage.setItem('userId',res)

    //     this.$router.push("/transactions")

    //   })
    // }
    login() {
      this.$refs.loginFormRef.validate(async (valid) => {
        // 如果表单填写校验失败就退出
        if (!valid) return;

        // 使用FormData发送请求
        const formData = new FormData();
        formData.append("username", this.loginForm.username);
        formData.append("password", this.loginForm.password);

        try {
          // 发送POST请求
          const response = await this.$http.post("login", formData);

          // 检查响应状态
          if (response.status === 200) {
            // 登录成功，获取用户ID
            const userId = response.data;
            alert(`用户id为${userId}`);
            this.$message.success("登录成功");
            // 把用户ID存到本地
            window.sessionStorage.setItem("userId", userId);
            // 跳转到首页
            this.$router.push("/home");
          } else {
            // 如果状态码不是200，表示登录失败
            this.$message.error("登录失败，请检查您的账号和密码");
          }
        } catch (error) {
          // 网络请求异常处理
          console.error("请求错误：", error);
          this.$message.error("登录失败，请检查账号或密码");
        }
      });
    },
  },
};
</script>

<style lang="less" scoped>
.login_container {
  background-color: #2b4b6b;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);

  .avatar_box {
    height: 130px;
    width: 130px;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #ddd;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }

  .btns {
    display: flex;
    justify-content: flex-end;
  }
  .login_form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
  }
}
</style>